From d4965b6d5cff72e999ad8611eb61a16691ca77c8 Mon Sep 17 00:00:00 2001
From: Daniel McCarney <daniel@binaryparadox.net>
Date: Wed, 15 Mar 2023 11:07:43 -0400
Subject: [PATCH] CI: replace ubuntu 18.04 w/ 20.04.

The Build+Test matrix job of the GitHub actions workflow was using
Ubuntu 18.04, which is deprecated.

This commit replaces it with Ubuntu 20.04, the oldest supported Ubuntu
release available in GitHub actions at the time of writing.

The other workflow task are using `ubuntu-latest` and do not need
updating at this time.
---
 .github/workflows/build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2c2b5a0..add4bee 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
           - beta
           - nightly
           - 1.57
-        os: [ubuntu-18.04]
+        os: [ubuntu-20.04]
         # but only stable on macos/windows (slower platforms)
         include:
           - os: macos-latest